IEC 61264:1998

Contents
Foreword
Introduction
Clause
1. Scope and object
2. Normative references
3. Definitions
4. General recommendations for design and construction
    4.1 Purpose
    4.2 Rules for design
5. General requirements for tests
    5.1 Classification of tests
    5.2 General requirements for pressure tests
    5.3 General requirements for bending tests
6. Type tests
    6.1 General
    6.2 Pressure test
    6.3 Bending test
7. Sample tests
    7.1 Selection and number of test pieces
    7.2 Tests
    7.3 Re-test procedure
    7.4 Verification of dimensions
    7.5 Control of the roughness of ground parts
    7.6 Mechanical test (for assembled hollow insulators)
8. Routine tests
    8.1 General
    8.2 Mechanical tests
    8.3 Other tests
9. Documentation
    9.1 Marking
    9.2 Certificates
Annexes
A (informative) Tolerances of form and position
B (informative) Bending moment equivalent to the design
   pressure
C (informative) Bibliography

Applies to hollow insulators made of ceramic material, with their fixing devices, intended for use with a permanent gas pressure greater than 50 kPa gauge having an internal volume equal to or greater than 1 l (1 000 cm3). They are intended for use in electrical equipment operating on alternating current with a rated voltage greater than 1000 V and a frequency not greater than 100 Hz or for use in direct current equipment with a rated voltage greater than 1 500 V.